8-K 1 wfm05004_10506.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 27, 2005 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2005-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-122307-07 Pooling and Servicing Agreement) (Commission 54-2169516 (State or other File Number) 54-2169517 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On June 27, 2005 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2005-4 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2005-4 Trust, relating to the June 27, 2005 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2005-4 Trust (Registrant) By: Wells Fargo Bank, N.A. as Master Servicer By: /s/ Beth Belfield as Officer By: Beth Belfield as Officer Date: 7/5/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2005-4 Trust, relating to the June 27, 2005 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 45/2931/2005 Distribution Date: 56/2527/2005 Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Series 2005-4 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest ~~Principal~~ Class CUSIP Description Rate Balance Distribution ~~Distribution~~ A-PO 94982NAR5 SEN 0.00000% ~~982~~981,~~493~~235.4903 0.00 ~~1,258.46~~ A-1 94982NAA2 SEN 3.~~32000~~39000% 37,~~862~~769,~~642~~914.9638 ~~104~~106,~~722~~708.6017 ~~92,728.58~~ A-2 94982NAB0 SEN 4.~~18000~~11000% 0.00 ~~131~~129,~~849~~371.5485 ~~0.00~~ A-3 94982NAC8 SEN 5.00000% 110,~~442~~071,~~171~~257.8252 ~~460~~458,~~040~~665.8132 ~~370,914.31~~ A-4 94982NAD6 SEN 5.00000% 33,025,000.00 137,~~563~~614.8369 ~~0.00~~ A-5 94982NAE4 SEN 5.00000% 7,983,400.00 33,~~254~~266.4271 ~~0.00~~ A-6 94982NAF1 SEN 3.~~62000~~69000% 49,~~300~~224,~~788~~606.5164 ~~148~~151,~~680~~377.4524 ~~76,181.87~~ A-7 94982NAG9 SEN 11.~~86606~~58733% 12,~~381~~362,~~222~~090.0804 ~~122~~119,~~394~~378.4080 ~~19,132.04~~ A-8 94982NAH7 SEN 8.00000% 5,~~546~~537,~~338~~767.2882 36,~~964~~921.7528 ~~8,570.46~~ A-9 94982NAJ3 SEN 4.~~27000~~34000% 19,~~809~~679,~~439~~799.6179 7071,~~467~~180.9372 ~~129,639.82~~ A-10 94982NAK0 SEN 109.~~01002~~75335% 5,~~402~~367,~~563~~207.5733 4543,~~053~~626.2789 ~~35,356.24~~ A-11 94982NAL8 SEN 5.50000% 76,~~102~~121,~~911~~386.5497 3228,~~545~~058.4750 ~~981,524.57~~ A-R 94982NAS3 SEN 5.50000% 0.00 0.00 ~~0.00~~ A-LR 94982NAM6 SEN 5.50000% 0.00 0.00 ~~0.00~~ B-1 94982NAN4 SUB 5.50000% 4,~~803~~798,~~082~~124.1302 2221,~~007~~993.6908 ~~4,958.11~~ B-2 94982NAP9 SUB 5.50000% 1,~~650~~648,~~310~~606.2567 7,~~561~~556.7169 ~~1,703.58~~ B-3 94982NAQ7 SUB 5.50000% ~~901~~900,~~077~~147.3923 4,~~128~~125.7399 ~~930.16~~ B-4 94982NAT1 SUB 5.50000% ~~600~~599,~~385~~765.2750 2,~~750~~749.9613 ~~619.76~~ B-5 94982NAU8 SUB 5.50000% 449,~~539~~075.7267 2,~~059~~058.7942 ~~464.05~~ B-6 94982NAV6 SUB 5.50000% ~~451~~450,~~211~~745.5780 2,~~067~~066.4508 ~~465.73~~ Totals ~~298~~296,~~694~~970,~~578~~130.1941 1,~~364~~356,~~113~~719.~~80 1,724,447.74~~56

Certificateholder Distribution Summary (continued) Current Ending Cumulative Principal Realized Certificate Total Realized Class Distribution Loss Balance Distribution Losses A-PO 1,578.45 0.00 ~~981~~979,~~235~~656.0358 1,~~258~~578.4645 0.00 A-1 105,453.15 0.00 37,~~769~~664,~~914~~461.3822 ~~197~~212,~~451~~161.1832 0.00 A-2 0.00 0.00 ~~131~~0.00 129,~~849~~371.5485 0.00 A-3 421,812.62 0.00 ~~110~~109,~~071~~649,~~257~~444.5290 ~~830~~880,~~955~~477.1294 0.00 A-4 0.00 0.00 33,025,000.00 137,~~563~~614.8369 0.00 A-5 0.00 0.00 7,983,400.00 33,~~254~~266.4271 0.00 A-6 94,667.88 0.00 49,~~224~~129,~~606~~938.6476 ~~224~~246,~~862~~045.3212 0.00 A-7 23,774.55 0.00 12,~~362~~338,~~090~~315.0449 ~~141~~143,~~526~~153.4435 0.00 A-8 10,650.14 0.00 5,~~537~~527,~~767~~117.8269 4547,~~535~~571.2142 0.00 A-9 179,151.94 0.00 19,~~679~~500,~~799~~647.7986 ~~200~~250,~~107~~332.7566 0.00 A-10 48,859.52 0.00 5,~~367~~318,~~207~~347.3381 8092,~~409~~486.5141 0.00 A-11 171,793.09 0.00 65,~~121~~949,~~386~~593.9788 1199,~~014,070~~851.0459 0.00 A-R 0.00 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 B-1 4,999.85 0.00 4,~~798~~793,124.0217 26,~~965~~992.8093 0.00 B-2 1,717.92 0.00 1,~~648~~646,~~606~~888.6775 9,~~265~~274.2961 0.00 B-3 937.99 0.00 ~~900~~899,~~147~~209.23 5,~~058~~063.8998 0.00 B-4 624.98 0.00 599,~~765~~140.5052 3,~~370~~374.7211 0.00 B-5 467.96 0.00 ~~449~~448,~~075~~607.6771 2,~~523~~526.8438 0.00 B-6 469.65 0.04 450,~~745~~276.8010 2,~~533~~535.1873 0.0408 Totals 1,066,959.69 0.04 ~~296~~295,~~970~~903,~~130~~170.4167 32,~~088~~423,~~561~~679.5425 0.0408 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) A-PO 984,534.18 ~~982~~981,~~493~~235.4903 1,~~059~~064.2179 ~~199~~513.2565 0.00 0.00 A-1 37,942,600.00 37,~~862~~769,~~642~~914.9638 1629,~~131~~875.2825 7675,~~597~~577.3090 0.00 0.00 A-2 0.00 0.00 0.00 0.00 0.00 0.00 A-3 110,762,000.00 110,~~442~~071,~~171~~257.8252 64119,~~525~~501.1101 ~~306~~302,~~389~~311.2061 0.00 0.00 A-4 33,025,000.00 33,025,000.00 0.00 0.00 0.00 0.00 A-5 7,983,400.00 7,983,400.00 0.00 0.00 0.00 0.00 A-6 49,358,466.00 49,~~300~~224,~~788~~606.5164 1326,~~252~~819.7774 6267,~~929~~848.1013 0.00 0.00 A-7 12,395,707.00 12,~~381~~362,~~222~~090.0804 36,~~328~~735.2541 1517,~~803~~039.7913 0.00 0.00 A-8 5,552,827.00 5,~~546~~537,~~338~~767.2882 13,~~490~~017.9422 7,~~079~~632.5291 0.00 0.00 A-9 19,889,580.00 19,~~809~~679,~~439~~799.6179 2250,~~552~~754.4438 ~~107~~128,~~087~~397.3756 0.00 0.00 A-10 5,424,420.00 5,~~402~~367,~~563~~207.5733 613,~~150~~842.6508 2935,~~205~~017.5945 0.00 0.00 A-11 8,284,000.00 76,~~102~~121,~~911~~386.5497 ~~176~~56,~~409~~618.9766 ~~837~~143,~~660~~232.0793 (3228,~~545~~058.4750) 0.00 A-R 50.00 0.00 0.00 0.00 0.00 0.00 A-LR 50.00 0.00 0.00 0.00 0.00 0.00 B-1 4,808,000.00 4,~~803~~798,~~082~~124.1302 4,~~958~~999.1185 0.00 0.00 0.00 B-2 1,652,000.00 1,~~650~~648,~~310~~606.2567 1,~~703~~717.5892 0.00 0.00 0.00 B-3 902,000.00 ~~901~~900,~~077~~147.3923 ~~930~~937.1699 0.00 0.00 0.00 B-4 601,000.00 ~~600~~599,~~385~~765.2750 ~~619~~624.7698 0.00 0.00 0.00 B-5 450,000.00 449,~~539~~075.7267 ~~464~~467.0596 0.00 0.00 0.00 B-6 451,673.57 ~~451~~450,~~211~~745.5780 ~~465~~469.7365 0.00 0.00 0.04 Totals 300,467,307.75 ~~298~~296,~~694~~970,~~578~~130.1941 ~~314~~317,~~042~~446.0189 1777,~~442,951~~571.1927 (3228,~~545~~058.4750) 0.04 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution A-PO 1,~~258~~578.4645 ~~981~~979,~~235~~656.0358 0.~~99664902~~99504578 1,~~258~~578.4645 A-1 92105,~~728~~453.5815 37,~~769~~664,~~914~~461.3822 0.~~99544877~~99266949 92105,~~728~~453.5815 A-2 0.00 0.00 0.00000000 0.00 A-3 ~~370~~421,~~914~~812.3162 ~~110~~109,~~071~~649,~~257~~444.5290 0.~~99376372~~98995544 ~~370~~421,~~914~~812.3162 A-4 0.00 33,025,000.00 1.00000000 0.00 A-5 0.00 7,983,400.00 1.00000000 0.00 A-6 7694,~~181~~667.8788 49,~~224~~129,~~606~~938.6476 0.~~99728802~~99537005 7694,~~181~~667.8788 A-7 1923,~~132~~774.0455 12,~~362~~338,~~090~~315.0449 0.~~99728802~~99537005 1923,~~132~~774.0455 A-8 810,~~570~~650.4614 5,~~537~~527,~~767~~117.8269 0.~~99728802~~99537005 810,~~570~~650.4614 A-9 ~~129~~179,~~639~~151.8294 19,~~679~~500,~~799~~647.7986 0.~~98945276~~98044543 ~~129~~179,~~639~~151.8294 A-10 3548,~~356~~859.2452 5,~~367~~318,~~207~~347.3381 0.~~98945276~~98044543 3548,~~356~~859.2452 A-11 ~~981~~171,~~524~~793.5709 65,~~121~~949,~~386~~593.9788 0.~~73894097~~71820303 ~~981~~171,~~524~~793.5709 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 B-1 4,~~958~~999.1185 4,~~798~~793,124.0217 0.~~99794593~~99690603 4,~~958~~999.1185 B-2 1,~~703~~717.5892 1,~~648~~646,~~606~~888.6775 0.~~99794593~~99690602 1,~~703~~717.5892 B-3 ~~930~~937.1699 ~~900~~899,~~147~~209.23 0.~~99794593~~99690602 ~~930~~937.1699 B-4 ~~619~~624.7698 599,~~765~~140.5052 0.~~99794592~~99690602 ~~619~~624.7698 B-5 ~~464~~467.0596 ~~449~~448,~~075~~607.6771 0.~~99794593~~99690602 ~~464~~467.0596 B-6 ~~465~~469.7769 450,~~745~~276.8010 0.~~99794593~~99690602 ~~465~~469.7365 Totals 1,~~724~~066,~~447~~959.7873 ~~296~~295,~~970~~903,~~130~~170.4167 0.~~98836087~~98480987 1,~~724~~066,~~447~~959.7469

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 984,534.18 ~~997~~996.~~92725327~~64902441 1.~~07584889~~08151654 0.~~20237997~~52171881 0.00000000 A-1 37,942,600.00 ~~997~~995.~~89268421~~44876682 0.~~42514957~~78738015 21.~~01876782~~99190092 0.00000000 A-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-3 110,762,000.00 ~~997~~993.~~11247377~~76372330 01.~~58255638~~07889899 2.~~76619418~~72938020 0.00000000 A-4 33,025,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 7,983,400.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-6 49,358,466.00 ~~998~~997.~~83145700~~28801620 0.~~26850044~~54336656 1.~~27494035~~37459965 0.00000000 A-7 12,395,707.00 ~~998~~997.~~83145673~~28801592 0.~~26850022~~54336634 1.~~27494059~~37459929 0.00000000 A-8 5,552,827.00 ~~998~~997.~~83145648~~28801564 0.~~26850107~~54336647 1.~~27493977~~37459892 0.00000000 A-9 19,889,580.00 ~~995~~989.~~97073493~~45275818 12.~~13388216~~55180753 56.~~38409408~~45551892 0.00000000 A-10 5,424,420.00 ~~995~~989.~~97073420~~45275808 12.~~13388159~~55180830 56.~~38409452~~45551967 0.00000000 A-11 8,284,000.00 ~~857~~738.~~42534283~~94096692 216.~~29526437~~83470063 ~~101~~17.~~11782593~~29031024 (3.~~92871439~~38707146) A-R 50.00 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 4,808,000.00 ~~998~~997.~~97714850~~94592762 1.~~03122088~~03990225 0.00000000 0.00000000 B-2 1,652,000.00 ~~998~~997.~~97714891~~94592615 1.~~03122276~~03990315 0.00000000 0.00000000 B-3 902,000.00 ~~998~~997.~~97715078~~94593126 1.~~03121951~~03990022 0.00000000 0.00000000 B-4 601,000.00 ~~998~~997.~~97715474~~94592346 1.~~03121464~~03990017 0.00000000 0.00000000 B-5 450,000.00 ~~998~~997.~~97715556~~94593333 1.~~03122222~~03991111 0.00000000 0.00000000 B-6 451,673.57 ~~998~~997.~~97713740~~94592807 1.~~03112077~~03979961 0.00000000 0.00000000 (2) Per $1,000 Denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution A-PO 0.00000000 1.~~27822886~~60324551 ~~996~~995.~~64902441~~04577891 0.~~99664902~~99504578 1.~~27822886~~60324551 A-1 0.00000000 2.~~44391739~~77928107 ~~995~~992.~~44876682~~66948549 0.~~99544877~~99266949 2.~~44391739~~77928107 A-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-3 0.00000000 3.~~34875056~~80827919 ~~993~~989.~~76372330~~95544411 0.~~99376372~~98995544 3.~~34875056~~80827919 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-6 0.00000000 1.~~54344079~~91796641 ~~997~~995.~~28801620~~37004979 0.~~99728802~~99537005 1.~~54344079~~91796641 A-7 0.00000000 1.~~54344081~~91796644 ~~997~~995.~~28801592~~37004949 0.~~99728802~~99537005 1.~~54344081~~91796644 A-8 0.00000000 1.~~54344085~~91796719 ~~997~~995.~~28801564~~37005025 0.~~99728802~~99537005 1.~~54344085~~91796719 A-9 0.00000000 69.~~51797675~~00732645 ~~989~~980.~~45275818~~44543223 0.~~98945276~~98044543 69.~~51797675~~00732645 A-10 0.00000000 69.~~51797612~~00732613 ~~989~~980.~~45275808~~44543195 0.~~98945276~~98044543 69.~~51797612~~00732613 A-11 0.00000000 ~~118~~20.~~48437591~~73793940 ~~738~~718.~~94096692~~20302752 0.~~73894097~~71820303 ~~118~~20.~~48437591~~73793940 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 1.~~03122088~~03990225 ~~997~~996.~~94592762~~90602537 0.~~99794593~~99690603 1.~~03122088~~03990225 B-2 0.00000000 1.~~03122276~~03990315 ~~997~~996.~~94592615~~90602300 0.~~99794593~~99690602 1.~~03122276~~03990315 B-3 0.00000000 1.~~03121951~~03990022 ~~997~~996.~~94593126~~90601996 0.~~99794593~~99690602 1.~~03121951~~03990022 B-4 0.00000000 1.~~03121464~~03990017 ~~997~~996.~~94592346~~90602329 0.~~99794592~~99690602 1.~~03121464~~03990017 B-5 0.00000000 1.~~03122222~~03991111 ~~997~~996.~~94593333~~90602222 0.~~99794593~~99690602 1.~~03122222~~03991111 B-6 0.00008856 1.~~03120933~~03988817 ~~997~~996.~~94592807~~90601777 0.~~99794593~~99690602 1.~~03112077~~03979961 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall A-PO 984,534.18 0.00000% ~~982~~981,~~493~~235.4903 0.00 0.00 0.00 A-1 37,942,600.00 3.~~32000~~39000% 37,~~862~~769,~~642~~914.9638 ~~104~~106,~~753~~700.3101 0.00 0.00 A-2 0.00 4.~~18000~~11000% 37,~~862~~769,~~642~~914.9638 ~~131~~129,~~888~~361.2196 0.00 0.00 A-3 110,762,000.00 5.00000% 110,~~442~~071,~~171~~257.8252 ~~460~~458,~~175~~630.7224 0.00 0.00 A-4 33,025,000.00 5.00000% 33,025,000.00 137,604.17 0.00 0.00 A-5 7,983,400.00 5.00000% 7,983,400.00 33,264.17 0.00 0.00 A-6 49,358,466.00 3.~~62000~~69000% 49,~~300~~224,~~788~~606.5164 ~~148~~151,~~724~~365.0567 0.00 0.00 A-7 12,395,707.00 11.~~86606~~58733% 12,~~381~~362,~~222~~090.0804 ~~122~~119,~~430~~369.2967 0.00 0.00 A-8 5,552,827.00 8.00000% 5,~~546~~537,~~338~~767.2882 36,~~975~~918.5945 0.00 0.00 A-9 19,889,580.00 4.~~27000~~34000% 19,~~809~~679,~~439~~799.6179 7071,~~488~~175.5928 0.00 0.00 A-10 5,424,420.00 109.~~01002~~75335% 5,~~402~~367,~~563~~207.5733 4543,~~066~~623.4856 0.00 0.00 A-11 8,284,000.00 5.50000% 76,~~102~~121,~~911~~386.5497 3228,~~555~~056.0136 0.00 0.00 A-R 50.00 5.50000% 0.00 0.00 0.00 0.00 A-LR 50.00 5.50000% 0.00 0.00 0.00 0.00 B-1 4,808,000.00 5.50000% 4,~~803~~798,~~082~~124.1302 2221,~~014~~991.1340 0.00 0.00 B-2 1,652,000.00 5.50000% 1,~~650~~648,~~310~~606.2567 7,~~563~~556.9211 0.00 0.00 B-3 902,000.00 5.50000% ~~901~~900,~~077~~147.3923 4,~~129~~125.9467 0.00 0.00 B-4 601,000.00 5.50000% ~~600~~599,~~385~~765.2750 2,~~751~~748.7793 0.00 0.00 B-5 450,000.00 5.50000% 449,~~539~~075.7267 2,~~060~~058.3926 0.00 0.00 B-6 451,673.57 5.50000% ~~451~~450,~~211~~745.5780 2,~~068~~065.0592 0.00 0.00 Totals 300,467,307.75 1,~~364~~356,~~513~~615.7983 0.00 0.00

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance A-PO 0.00 0.00 0.00 0.00 ~~981~~979,~~235~~656.0358 A-1 30(8.7116) 0.00 ~~104~~106,~~722~~708.6017 0.00 37,~~769~~664,~~914~~461.3822 A-2 38(9.6689) 0.00 ~~131~~129,~~849~~371.5485 0.00 37,~~769~~664,~~914~~461.3822 A-3 ~~134~~(35.9008) 0.00 ~~460~~458,~~040~~665.8132 0.00 ~~110~~109,~~071~~649,~~257~~444.5290 A-4 40(10.3452) 0.00 137,~~563~~614.8369 0.00 33,025,000.00 A-5 9(2.7554) 0.00 33,~~254~~266.4271 0.00 7,983,400.00 A-6 43(11.6058) 0.00 ~~148~~151,~~680~~377.4524 0.00 49,~~224~~129,~~606~~938.6476 A-7 35(9.8913) 0.00 ~~122~~119,~~394~~378.4080 0.00 12,~~362~~338,~~090~~315.0449 A-8 10(2.8482) 0.00 36,~~964~~921.7528 0.00 5,~~537~~527,~~767~~117.8269 A-9 20(5.6644) 0.00 7071,~~467~~180.9372 0.00 19,~~679~~500,~~799~~647.7986 A-10 13(3.2134) 0.00 4543,~~053~~626.2789 0.00 5,~~367~~318,~~207~~347.3381 A-11 9(2.5415) 0.00 3228,~~545~~058.4750 0.00 65,~~121~~949,~~386~~593.9788 A-R 0.00 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 B-1 6(1.4368) 0.00 2221,~~007~~993.6908 0.00 4,~~798~~793,124.0217 B-2 2(0.2158) 0.00 7,~~561~~556.7169 0.00 1,~~648~~646,~~606~~888.6775 B-3 1(0.2131) 0.00 4,~~128~~125.7399 0.00 ~~900~~899,~~147~~209.23 B-4 (0.8021) 0.00 2,~~750~~749.9613 0.00 599,~~765~~140.5052 B-5 (0.6016) 0.00 2,~~059~~058.7942 0.00 ~~449~~448,~~075~~607.6771 B-6 (0.6016) 0.00 2,~~067~~066.4508 0.00 450,~~745~~276.8010 Totals ~~399~~(103.9575) 0.00 1,~~364~~356,~~113~~719.8056 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall A-PO 984,534.18 0.00000% ~~997~~996.~~92725327~~64902441 0.00000000 0.00000000 0.00000000 A-1 37,942,600.00 3.~~32000~~39000% ~~997~~995.~~89268421~~44876682 2.~~76083637~~81214282 0.00000000 0.00000000 A-2 0.00 4.~~18000~~11000% ~~997~~995.~~89268421~~44876682 3.~~47599295~~40941211 0.00000000 0.00000000 A-3 110,762,000.00 5.00000% ~~997~~993.~~11247377~~76372330 4.~~15463534~~14068218 0.00000000 0.00000000 A-4 33,025,000.00 5.00000% 1000.00000000 4.16666677 0.00000000 0.00000000 A-5 7,983,400.00 5.00000% 1000.00000000 4.16666708 0.00000000 0.00000000 A-6 49,358,466.00 3.~~62000~~69000% ~~998~~997.~~83145700~~28801620 3.~~01314166~~06666074 0.00000000 0.00000000 A-7 12,395,707.00 11.~~86606~~58733% ~~998~~997.~~83145673~~28801592 9.~~87682994~~62992026 0.00000000 0.00000000 A-8 5,552,827.00 8.00000% ~~998~~997.~~83145648~~28801564 6.~~65887664~~64858639 0.00000000 0.00000000 A-9 19,889,580.00 4.~~27000~~34000% ~~995~~989.~~97073493~~45275818 3.~~54399590~~57852101 0.00000000 0.00000000 A-10 5,424,420.00 109.~~01002~~75335% ~~995~~989.~~97073420~~45275808 8.~~30807349~~04206901 0.00000000 0.00000000 A-11 8,284,000.00 5.50000% ~~857~~738.~~42534283~~94096692 3.~~92986601~~38681313 0.00000000 0.00000000 A-R 50.00 5.50000% 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 5.50000% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 4,808,000.00 5.50000% ~~998~~997.~~97714850~~94592762 4.~~57864601~~57391847 0.00000000 0.00000000 B-2 1,652,000.00 5.50000% ~~998~~997.~~97714891~~94592615 4.~~57864407~~57391646 0.00000000 0.00000000 B-3 902,000.00 5.50000% ~~998~~997.~~97715078~~94593126 4.~~57864745~~57391353 0.00000000 0.00000000 B-4 601,000.00 5.50000% ~~998~~997.~~97715474~~94592346 4.~~57865225~~57392679 0.00000000 0.00000000 B-5 450,000.00 5.50000% ~~998~~997.~~97715556~~94593333 4.~~57864444~~57391111 0.00000000 0.00000000 B-6 451,673.57 5.50000% ~~998~~997.~~97713740~~94592807 4.~~57863851~~57392271 0.00000000 0.00000000 (5) Per $1,000 Denomination.

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance A-PO 0.00000000 0.00000000 0.00000000 0.00000000 ~~996~~995.~~64902441~~04577891 A-1 (0.~~00080938~~00021506) 0.00000000 2.~~76002699~~81235788 0.00000000 ~~995~~992.~~44876682~~66948549 A-2 (0.~~00101891~~00026066) 0.00000000 3.~~47497378~~40967277 0.00000000 ~~995~~992.~~44876682~~66948549 A-3 (0.~~00121793~~00031672) 0.00000000 4.~~15341733~~14099890 0.00000000 ~~993~~989.~~76372330~~95544411 A-4 (0.~~00122150~~00031855) 0.00000000 4.~~16544527~~16698531 0.00000000 1000.00000000 A-5 (0.~~00122128~~00031816) 0.00000000 4.~~16544580~~16698524 0.00000000 1000.00000000 A-6 (0.~~00088333~~00023461) 0.00000000 3.~~01225832~~06689515 0.00000000 ~~997~~995.~~28801620~~37004979 A-7 (0.~~00289536~~00073655) 0.00000000 9.~~87393458~~63065681 0.00000000 ~~997~~995.~~28801592~~37004949 A-8 (0.~~00195216~~00050785) 0.00000000 6.~~65692448~~64909604 0.00000000 ~~997~~995.~~28801564~~37005025 A-9 (0.~~00103873~~00027351) 0.00000000 3.~~54295717~~57879452 0.00000000 ~~989~~980.~~45275818~~44543223 A-10 (0.~~00243528~~00061573) 0.00000000 8.~~30563821~~04268290 0.00000000 ~~989~~980.~~45275808~~44543195 A-11 (0.~~00115162~~00025954) 0.00000000 3.~~92871439~~38707146 0.00000000 ~~738~~718.~~94096692~~20302752 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 (0.~~00133735~~00034942) 0.00000000 4.~~57730657~~57426789 0.00000000 ~~997~~996.~~94592762~~90602537 B-2 (0.~~00133777~~00035109) 0.00000000 4.~~57730630~~57426755 0.00000000 ~~997~~996.~~94592615~~90602300 B-3 (0.~~00134146~~00034368) 0.00000000 4.~~57730599~~57426829 0.00000000 ~~997~~996.~~94593126~~90601996 B-4 (0.~~00133111~~00034942) 0.00000000 4.~~57730449~~57425957 0.00000000 ~~997~~996.~~94592346~~90602329 B-5 (0.~~00133333~~00035556) 0.00000000 4.~~57731111~~57426667 0.00000000 ~~997~~996.~~94593333~~90602222 B-6 (0.~~00132839~~00035424) 0.00000000 4.~~57731011~~57427695 0.00000000 ~~997~~996.~~94592807~~90601777 (6) Amount Does Not Include Excess Special Hazard, Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 056,372.0006 Deposits Payments of Interest and Principal 32,~~261~~502,~~206~~689.6750 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 32,~~261~~502,~~206~~689.6750 Withdrawals Reimbursement for Servicer Advances ~~52,140~~0.6600 Payment of Service Fee 64,~~132~~340.4214 Payment of Interest and Principal 32,~~088~~423,~~561~~679.5324 Total Withdrawals (Pool Distribution Amount) 32,~~204~~488,~~834~~019.6138 Ending Balance 5671,~~372~~042.0618

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall ~~955~~(103.8975) Servicing Fee Support ~~555~~0.9400 Non-Supported Prepayment/Curtailment Interest Shortfall ~~399~~(103.9575)

SERVICING FEES Gross Servicing Fee 6261,~~200~~865.3552 Master Servicing Fee 2,~~488~~474.0162 Supported Prepayment/Curtailment Interest Shortfall ~~555~~0.9400 Net Servicing Fee 64,~~132~~340.4214

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT ~~DELINQUENCY STATUS~~ DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 1 0 0 0 1 ~~597~~516,~~875~~740.1397 0.00 0.00 0.00 ~~597~~516,~~875~~740.1397 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 1 0 0 0 1 ~~597~~516,~~875~~740.1397 0.00 0.00 0.00 ~~597~~516,~~875~~740.1397 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~174216~~174825% 0.000000% 0.000000% 0.000000% 0.~~174216~~174825% 0.~~200564~~174065% 0.000000% 0.000000% 0.000000% 0.~~200564~~174065% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~174216~~174825% 0.000000% 0.000000% 0.000000% 0.~~174216~~174825% 0.~~200564~~174065% 0.000000% 0.000000% 0.000000% 0.~~200564~~174065%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 5443,~~403~~681.3711

SUBORDINATION LEVEL/CREDIT ENHANCEMENT/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 8,864,673.57 2.95029554% 8,~~846~~837,~~464~~246.8948 2.~~97890730~~98653322% 97.~~021093~~013467% 100.000000% Class B-1 4,056,673.57 1.35012145% 4,~~048~~044,~~340~~122.8731 1.~~36321483~~36670462% 1.~~615692~~619829% 0.000000% Class B-2 2,404,673.57 0.80031122% 2,~~399~~397,~~734~~233.2056 0.~~80807258~~81014122% 0.~~555142~~556563% 0.000000% Class B-3 1,502,673.57 0.50011217% 1,~~499~~498,~~586~~024.9733 0.~~50496222~~50625491% 0.~~303110~~303886% 0.000000% Class B-4 901,673.57 0.30009041% ~~899~~898,~~821~~883.4781 0.~~30300067~~30377634% 0.~~201962~~202479% 0.000000% Class B-5 451,673.57 0.15032370% 450,~~745~~276.8010 0.~~15178153~~15217008% 0.~~151219~~151606% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~151782~~152170% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description Fixed 30 Year Weighted Average Gross Coupon 5.~~856197~~855827% Weighted Average Net Coupon 5.~~482742~~482535% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation ) ~~357~~356 Beginning Scheduled Collateral Loan Count ~~576~~574 Number Of Loans Paid In Full 2 Ending Scheduled Collateral Loan Count ~~574~~572 Beginning Scheduled Collateral Balance ~~298~~296,~~694~~970,~~578~~130.1840 Ending Scheduled Collateral Balance ~~296~~295,~~970~~903,~~130~~170.4068 Ending Actual Collateral Balance at 2931-~~Apr~~May-2005 ~~298~~296,~~097~~867,~~267~~190.3203 Ending Scheduled Balance For Wells Fargo Serviced ~~295~~294,~~848~~782,~~541~~729.3692 Ending Scheduled Balance For Other Servicers 1,~~121~~120,~~589~~440.0476 Monthly P &I Constant 1,~~738~~731,~~453~~269.4377 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 32,~~039~~373,~~231~~810.9285 Ending Scheduled Balance for Premium Loans ~~184~~183,~~079~~319,~~489~~225.7334 Ending scheduled Balance For discounted Loans 112,~~890~~583,~~640~~945.6734 Scheduled Principal ~~308~~309,~~380~~497.3887 Unscheduled Principal 1757,~~416,067~~461.4085 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% ~~294~~293,~~110~~042,~~748~~820.3376 Greater Than 80%, less than or equal to 85% 0.00 Greater than 85%, less than or equal to 95% 2,~~849~~848,~~854~~151.4797 Greater than 95% 0.00

Filing Compare · Wells Fargo Asset Securities Corp Mortgage Pass-Through Certificates Series 2005-4